The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Good choice. Alexander Graham Bell
invents the telephone and calls for Watson.
The Big Bang Theory Season 1, Episode 14

...what are you gonna do? Knock and say
to Mrs. Bell, "Fan of your husband.
The Big Bang Theory Season 1, Episode 14
![[BELL DINGING]
[BELL DINGING]](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
[BELL DINGING]
Breaking Bad Season 2, Episode 2

(ALARM BELL RINGING)
Game of Thrones Season 5, Episode 4

Now assuming the left side of a BELL curve
peaking around the present...
The Big Bang Theory Season 4, Episode 1